Shoe for elevator-guides.



G. DUN LAP.

SHOE FOR ELEVATOR GUIDES.

APPLIOATION FILED MAR. 25, 1912.

1,076,273, Patented Oct. 21, 1913.

2 SHEETS-SHEET 1.

G. DUNLAP.

SHOE FOR ELEVATOR GUIDES.

APPLIOATION FILED MAR. 25, 1912.

Patented Oct. 21, 1913.

2 SHEETS-SHEET 2.

wane/sow UNITED STATES PATENT OFFICE.

GARLAND DUNLAP, OF

NEW YORK, N. Y., ASSIGNOR 0F ONE-HALF TQ MARGARET 0.

JENTONS, OF CLOSTER, NEW JERSEY.

SHOE FOB ELEVATOR-GUIDES.

Specification of Letters Patent.

Patented Oct. 21, 1913.

To all whom it may concern.

Be it known that I, GARLAND DUNLAP, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Shoes for Elevator-Guides, of which the following is a specification.

My invention guides.

The objects of the invention are to provide an elevator shoe in which the actuating devices shall be exposed to view for adjustment and removal; to provide a separable bearing for the stem of the shoe so that by removing the upper half of the bearing the shoe may be removed and a new one applied in a veryshort space of time; to provide visible readily accessible means for quickly adjusting the throw of the shoe in either direction and to provide like means for regulating the tension of the spring without changing the devices which limit the throw of the shoe. These objects I accomplish by the construction shown in the accompanying drawings, in which:

Figure 1 is a side elevation of my improved elevator shoe. Fig. 2 is a plan thereof. Fig. 3 is a perspective of the easing with its upper half removed. Fig. 4 is a perspective showing a modification.

A designates the casing formed of a lower section A, having a half bearing a in its upper face and an upper section A having a half bearing a in its lower face; these two half bearings registering and forming a cylindrical shaft bearing. The two sections A, A are provided with longitudinal flanges (1 connected by bolts a. The upper section A is provided on its upper side with two apertured guide lugs a a, while the inner end of the lower section A is provided with a longitudinally extending fulcrum bar a having a plurality of transverse a 'iertures a The lower section A is provided with base flanges a having apertures a for the bolts a, which secure the casing to the cross beams B; four of the shoes being attached to each car.

C indicates the shoe proper having a vertical groove 0, which embraces the guide rail G, and a stem or shaft C which slides in the bearing formed between the two sec tions A, A of the casing.

C is a vertical lever pivoted at its lower relates to shoes for elevator end by a pivot 0 to the bar a and pivoted ,at its middle by a pivot c to the inner forked end of the stem C. The upper end of the lever G is pivoted at c to the inner end of a sliding rod C mounted in the two guide lugs a a", and provided between said lugs with a tension spring 0 The tension of the spring 0 is regulated by means of the nuts 0 c mounted on the rod C adjacent to the inner side of lug a. By adjusting these nuts 0 0 the tension of the spring to control the movement of the shoe C inwardly or away from the guide rail G may be regulated and this is the sole function of said nuts. The tension of the spring ma thus be regulated without changing the length of throw of the stem and shoe. The outward movement of the shoe C toward the guide rail G is limited by the nuts 0 0 mounted on the sliding rod C adjacent to the outer side of lug a and the movement of the shoe C away from the rail G is limited by the nut 0 on the opposite end of the rod C next to the lug a. In practice the nuts c 0 will be set so that there will be a space about one sixteenth of an inch between the shoe and the guide rail and the nuts 0, 0 will be set to give the required tension to the spring 0 Then the nut 0 will be set to allow the required play of the shoe away from the guide rail. In case the spring 0 should'break, the nut 0 will prevent the shoe C from becoming disengaged from the guide rail, and, moreover, the spring may be readily replaced by a new one without the necessity of removing the shoe and its casing or bearing. Should the shoe break or wear out, it may be readily replaced by simply removing the top section or cover A of the casing. All of the parts are exposed to view and readily accessible, and there is, therefore, no need of removing the casing or bearing to either adjust any of the parts or replace them.

Referring now to Fig. 4, the casing A is in two parts A A with half bearings for the stem C of shoe C, but the two sections are separably connected by hinge knuckles 0, a through which are passed the pintles or bolts a by removing which the upper section A may be lifted and the shoe removed. From the inner end of the lower section A extend two longitudinal guide rods 0,, which are in the same horizontal plane. The inner end of the stem 0 is provided with a cross head 0 secured by means of a nut U and sliding on the rods a. The free ends of the rods a are connected by a sliding cross bar a, between which and the cross head C are the tension springs e which may be adjusted by the nuts a on the extremities of the rods 41 without affecting the length of the throw of the shoe and its stem. The outward movement of the shoe toward its guide rail is limited by the nuts a on the rods a between the casing and the cross head G, and opposite move ment is cushioned by the springs a. As in Fig, 1, all the parts are exposed for adjustment, replacement, &c. This modified construction will in some cases prove better adapted as bottom shoes than the construction shown in Figs. 1, 2, 3. In both constructions the shoe is held from rotary movement and so chattering on the guide G is prevented.

What I claim is: g

1.- An elevator guide shoe comprising a removable casing formed in two separable sections with half bearings between them, a shoe having a stem mounted removably in said half bearings, lugs or guides on the up per section, a rod passing through said lugs or guides and a tension spring exterior to the casing and encircling said rod for forc-- ing' the shoe outwardly.

2. An elevator guide shoe comprising a removable casing formed in two separable sections with half bearings between them,

' a shoe having a stem mounted removably in said half bearings, lugs or guides on the upper section, a rod passing through said lugs or guides, a tension sprlng' exterior to the casing and encircling said rod for forcing the shoe outwardly, and adjustable means also exterior to the casing and positively limiting the outward movement of the shoe.

3. An elevator guide shoe comprising a casing or bearing, a shoe having its stem sliding therein, a pivoted lever connected between its ends to the inner end of the stem, a sliding rod parallel with the stem and pivoted to the end of the lever opposite its fulcrum, guide lugs on the casing for said rod, and a tension spring on the rod.

4. An elevator guide shoe comprising a casing or bearing, a shoe having a stem sliding in said bearing, a lever fulcrumed at one end and pivoted between its ends to the inner end of said stem, a sliding rod pivotally connected at its inner end to the free end of said lever, guide lugs for said rod on the casing, a tension spring on the sliding rod between the said lugs, a tension nut on the rod against which the outer end of said spring bears, and a stop nut on the rod adjacent to the inner guide lug to limit the outward movement of the shoe.

5, An elevator guide shoe comprising a casing or hearing, a shoe having a stem sliding in said bearing, a lever fulcrumed at one end and pivotally connected between its ends to the inner end of said stem, a sliding rod 'pivotally connected at its inner end to the free end of said lever,- guide lugs for said rod, a tension spring on the rod between said lugs, a stop nut on the rod outside of the inner guide lug, and a second nut on the rod outside of the outer guide lug.

6. An elevator guide shoe comprisin a casing or hearing, a shoe having a stem s iding in said bearing, a bar extending longitudinally from the casing and having a plurality of apertures, a lever pivoted at one end in one of said apertures, and pivotally connected between its ends to the inner end of the stem, a sliding rod pivotally connected to the free end of said lever, guide lugs for the rod on the casing, a tension spring on the rod between the said guide lugs, and means for positively limiting the movement of the rod through the lugs.

7. An elevator guide shoe comprising a two part separable casing or hearing, a shoe having a stem sliding between the two members of the casing, a lever fulcrumed at one end to the casing, and pivotally connected between its ends to the stem of the shoe, a sliding rod pivotally connected to the free end of the lever, guide lugs for the rod on the top casing member, a tension spring on the rod between said guide lugs, and means for adjusting the play of the sliding rod in the lugs.

8 An elevator guide shoe comprising a casing, a shoe having a stem sliding through the casing, an exposed spring pressing the stem outwardly, adjustable means for posi tively limiting the outward throw of the stem and independent means for adjusting the tension of the spring without aifecting the length of throw of the stem and shoe.

In testimony whereof I affix my signature in presence of two witnesses.

GARLAND D'UNLAP.

Witnesses:

FREDERICK V. WINTERS, O'r'ro NANZ.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

